TY  - BOOK
AU  - Freeman,Donald B.
TI  - International trade, migration, and capital flows: a quantitative analysis of spatial economic interaction 
T2  - The University of Chicago. Dept. of Geography. Research paper
U1  - 382.1 
PY  - 1973///
CY  - Chicago
PB  - University of Chicago, Dept. of Geography
KW  - International economic relations
KW  - Mathematical models
KW  - International trade
N1  - Bibliography: p. 189-201
ER  -